This is the file format that most of the web portals make use of to save the digital video and audio streams. The short name for this format is MPEG-4.

The .MP4 file format is normally considered as an upgraded version of the .MP3 files, with .MP4 format offering better flexibility and functionality. This is the reason why most users prefer .MP4 file format over .MP3. The .MP4 files are generally used to save the digital media on mobile devices, computers and portable hard drives. Mostly stored files in this format are the pictures, video and audio files.